No full text
Paper published in a book (Scientific congresses and symposiums)
Capillary and Gravity-driven Instabilities in Finite Circular Containers
Dauby, Pierre; Narayanan, Ranga; Johnson, D. et al.
1998In Bulletin of the American Physical Society, Vol. 43, n°9
Peer reviewed
 

Files


Full Text
No document available.

Send to



Details



Abstract :
[en] When a horizontal fluid layer is heated from below, convection sets in provided the vertical temperature gradient exceeds a critical value. The motion is due to a combined effect of gravity and capillarity when the upper surface of the fluid is free. Convection usually takes the form of a regular pattern of convective cells, which are often hexagonal or roll-like in horizontally infinite layers. In confined geometries, the appearance of the instability phenomenon is greatly influenced by the presence of lateral walls which inhibit convection due to friction and which also determine the shape of the convective cells. In this work we present a theoretical and experimental analysis of the thermo-convective instability of a fluid layer contained in a circular container. The motion and the temperature perturbations in the air layer above the fluid are also taken into account. The convective threshold is determined as a function of the aspect ratio of the vessel and the convective stationary and oscillatory structures appearing in the non linear regime are also studied. Experimental results are presented and compared with the theoretical approach.
Disciplines :
Physics
Author, co-author :
Dauby, Pierre  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Thermodynamique des phénomènes irréversibles
Narayanan, Ranga
Johnson, D.
Watford, C.
Language :
English
Title :
Capillary and Gravity-driven Instabilities in Finite Circular Containers
Publication date :
November 1998
Event name :
51st Annual Meeting of the division of Fluid Dynamics
Event organizer :
APS
Event place :
Philadelphia, United States
Event date :
22-24 nov. 1998
Audience :
International
Main work title :
Bulletin of the American Physical Society, Vol. 43, n°9
Pages :
1979
Peer reviewed :
Peer reviewed
Available on ORBi :
since 15 May 2010

Statistics


Number of views
33 (0 by ULiège)
Number of downloads
0 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi